Mary Ann's Bar & Restaurant is a well established seafood bar and restaurant in the village of Castletownshend in County Cork. The pub dates back to 1846, and has been under the ownership of Fergus and Patricia O' Mahony since 1988. They serve lunch and dinner every day from March to November, and from November to March Wednesday to Sunday lunch and dinner is served. Vegetarian, vegan and gluten free menu options are also available on request.

The first floor restaurant is overlooking the sea, while the old style bar downstairs overlooks the magnificent walled garden and vine room. Mary Ann's Bar & Restaurant serves a range of seafood options and a menu that includes Irish, European and Asian fusion inspired dishes. One of Mary Ann's house specialities is the home baked brown bread with a platter of Castlehaven Bay Shellfish. The platter usually includes, langoustine, crab meat, crab claws, fresh and smoked salmon. The evening menu will always include the catch of the day, delivered fresh from the nearby fishing port of Union Hall. A comprehensive wine list is also available at Mary Ann's Bar & Restaurant offering weekly and monthly specials.

The Warren Art Gallery is located on the first floor of Mary Ann's, selling modern Irish and international pieces of artworks and paintings.